Brooder



April 14, 1925.

H. H. HALL BROODER Filed Jan. 13, 192;

2 Sheets-Sheet 1 IN VEN TOR.

H EY HALL.

ATTORNEYS.

April 14, 1925.

' 1,533,186 H. H. HALL Filed Jan. 15, 1922 2 Sheets-Sheet v INVENTOR. H ARVEY H, HA L 16 ATTORNEYS.

'nection to be inserted into Patented Apr. 14, 19 25.

UNITED STATES HARVEY H. HALL, OF ELYR-IA, OHIO.

BBOODER.

Application filed January 13, 1922. SeriaI No. 528,901.

To all whom it may concern Be it known that I, HARVEY H. HALL, a

citizen of the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented new and useful Improvements in Brooders, of which the following is a full, clear, and concise description, such as will enable those skilled in the art to which my invention appertains to make and use the same.

This invention relates particularly to new and useful improvements in that class of brooders designed to be heated by the heat from an electric lamp.

An object of my invention is to provide a brooder which is simple in construction and inexpensive to manufacture, the different component partsentermg lIltO the brooder being simple to assemble together and when assembled being capable of withstanding hard usage without becoming deranged.

Another object of my invention is to provide a brooder of the above type, in which the electric lamp'may be easily removed or replaced by lamps or other electric heating elements having the same Edison plug conthe Edison socket, which is secured rigidly in the interior of the brooder.

Another object of my invention is to provide a brooder of the above type made entirely of metal and which have the various parts arranged to produce a distribution of heated air which will be more efiicient for the purpose desired as will be hereinafter more fully explained.

Another object of my invention is to provide adjustable means whereby the brooder dome and heating parts secured therewith may be adjustably lifted above the supporting floor to different heights as may be desired and thereby providing a means for increasing the area over which the heating effect will be described.

Other objects of my invention and the invention itself will be better understood from the following description of a special embodiment of my invention, and in which description reference will be madeto the accompanying drawings.

Referring to the drawings:

Fig. 1 shows a top plan view of an embodiment of my invention.

Fig. 2 shows a side elevational view thereof.

Fig. 3 shows a vertical section taken on the line 3-3 of Fig. 1.

Referring now to the different figures of the drawings, in all of which parts are designated by like reference characters; at 2 is shown a dome which is corrugated at 3, 4. and 5, for the purpose of strengthening the same, the dome being substantially conical in shape and being capable of being supported on supporting posts 8, of which a plurality, preferably three in numher, are provided, the said posts comprising an upper portion 9 bolted at 10 and 11 to the dome 2, and a lower portion 12 having a horizontal flanged foot 13, the two portions 9 and 12 are bolted together by a bolt and nut combination l4c, the bolt of which is adapted to pass through any desired one of a plurality of openings as 15 of the lower portion 12 and a small opening of the upper portion 9.

Each portion of the said supports 8 is provided with a longitudinal row of such openings 15, so that by reciprocating the portion 12 along portion 9 and inserting the bolt of the bolt and nut combination through a suitable pair of holes of the two portions of the supports 8, the dome 2 can be elevated when standing on the feet 13 to different desired distances from the floor upon which the feet 13 of the supports 8 rest.

Within and below the dome 2 and rigidly secured thereto at their peripheral portions, are mounted a pair of oppositely dished concavo-convex sheet metal heat deflecting discs 6 and 7 the disc 6 being inverted like a dome and the disc 7 being upright like a saucer, the two discs being secured together at their peripheries by the lower disc being folded over the edge 16 of the upper disc, so as to make a heating chamber 17 between the discs and in which chamber an incandescent lamp 31 or other heating element-is adapted to be mounted, an end 19 of the support member 9 is adapted to over-lap the flanged peripheries of the disc members 6 and 7 and to clamp them tightly against the under side of the dome 2. The upper end of the members 9, together with the bolts 11 constitutes a heating chamber or clamping means whereby the heating chamber is supported from the dome by its peripheral portions adjacent the bolts 11. The lower disc member 7 has an annular opening 20 in this way electric -served by "'flect 'theradiant heat from the lamp 811 from" the lower-inn-ersurface 31 of the dome disc 6 and which inner surface is bright in which opening a metallic cylinder 21 is supportedf This cylinder is adapted to receive at its end a flanged sheet metal plug or cap 22 the flan e therefor bein indicated "at 23 and there being a tapered upper portion.

24 adaptable for frictional engagement with the inner walls of the cylinder 21.

An Edison electric lamp socket receiving member 25 is tightlysecured within a centrally disposed opening 26 of the said upper disc member 6 and .an electric connection consisting of a-pair of wires 27 passing through a hushed opening 28 in the dome member 2 isnttached to the electric contact elements at29 and 30 of the said socket; in current may be conveyed through the center ofthe dome and the top disc to an incandescent, lamp 81; which is mounted in the said socket, with the. electrodesin Contact with the said contact members.

in order to properly distribute the heat fronrthe heatingchamber to the space helow'the dome 2 and to a certain extension outwardly therefrom where the chicks the brooder will congregate, I recolor, being either white. or having a bright metallic luster for the purpose of reflecting said radiant heat downwardly in order to prevent the absorption of heat through the 2 disc 6. i I provide a dead airspace between the. disc 6 and the lower surface of the dome 2' which is an insulator of heat.

The radiatingheat directed by the lamp .or other source of'radiant'heat 31, imping- "ing directly'upon the innerwalls 33 of the 'sorbed:andiconreyedby the said walls to the lower disc member 7 and the inner walls 34 and 35 of the'cylinder 21 and cap 22 is aboutersurface thereof. This effect is incur red.- by ily-painting the walls=33 of the disc 7: andthe, walls 34L and of the metallic gcylinder 21 and cap '22 a: dull black color .,such as flat black. I also find vthat this vthermaldzransferenceis augmented by paint- Hing'the outer surface: of-these walls a. dull More flat black. I This effect is, I. believe, se-

cured because oft-he betterheat absorption properties of a black surface-and the greater -lieat .distributing effect of such a painted surface.

disposed I find that a brooder constructed as above described wilt-produce: a more uniform amount of heat overthe entire area to be served by the brooder and that the efiiciency of'theiheating element is increased, as little of the heat is conveyed away, due to the heating chamber being supported only at its peripheral edges from the outside dome 2 and due to the presence of the air insulating wall 32.

Having thus described my invention as embodied in a specific structure, I am "aware that ,numerous and extensive departures may he madefroin the embodiment herein illustrated anddescribed," but without departing from the spirit of my invention.

1 claim: 7 1. In a brooder, in combination with an upper dome, a pair of superposed,oppositely disposed dished discs mounted unden'the said clom'e,'tl1e upper of said discs'being an upright dome, a heating"chamber being thereby provided between the discs, and means for supporting the said-dome and discs on afioor, but out of contact thereof, the upper dome being more sharply arched than thesaid upperdisc, said upper disc bein secured at its; peripheryto the said upper dome to provide adead alrheat insulating space betweenthe said upper dome upper dome to provide a dead air heat insulating space between the said upper dome and upper disc, the undersurface of the said upper disc and the upper surface of thesaid lower disc being so colored as to make the said first surface a radiant heat reflecting surface andto make the said second surface a radiant heat absorptive surface.

' 111 witness whereof, I have hereunto signed my name this 24th day of December,

HARVEY H. HALL. 

